Separable button



(No Model.)

W. A. TURNER.

SEPARABLE BUTTON. No. 480,352.

' Patented Aug. 9, 1892.

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n1: humus PETERB cm, mom-Limo wumuamu UNITED STATES I PATENT OFFICE.

WILLIAM A. TURNER, OF WORCESTER, MASSACHUSETTS.

SEPARABLE BUTTON.

SPECIFICATION forming part of Letters Patent No. 480,352, dated August9, 1892.

Application filed December 1'7, 1891. Serial No. 415,381- (No model.)

To all whom it may concern:

Be it known that I, WILLIAM A. TURNER, a citizen of the, United States,residing at Worcester, in the county of NVorcester and State ofMassachusetts, have invented a new and useful Improvement in SeparableButtons, of which the following is a specification, reference being hadto the accompanying drawings, in which Figure 1 represents a sideelevation, on an enlarged scale, of a separable button embodying myinvention. Fig. 2 is a bottom view of the crown. Fig. 3 is a top view ofthe shoe. Fig. 4 is a central vertical sectional view of the crown andshoe, the post being shown in full. Fig. 5 is a central verticalsectional view of the crown and shoe on a plane at right angles withthat shown in Fig. 4. Fig. 6 is a detached view of the disk or platecontaining the socket for the post and showing the inner side of theplate. Fig. 7 is a central sectional view of the plate shown in Fig. 6,the section being taken on line 7 7. Fig. 8 is a sectional view of thesame on line 8 8, Fig. 6. Fig. 9 is a detached view of the blade -springheld within the crown.

Similar letters refer to similar parts in the different figures.

Referring to the accompanying drawings, A denotes the shoe, B the postattached to the shoe. The free end of the postis reduced in size,forming a shank B and a shoulder B at the end of the shank B, and uponopposite sides project the pins B B The distance between the free endsof the pins B equals the diameter of the post B. The crown is formed ofan annular band or hoop O, the upper edge of which can form a settingfor a stone 0, or the band may be closed at the top by a metal plateformed, if desired, integrally with the band itself. The inner wall ofthe band C is provided with a bead or rib forming a shoulder G for ablade-spring 0 (shown in detached View in Fig. 9) and which is supportedby its ends upon the shoulder C The lower end of the band C is closed bya circu- .lar plate 1), (shown in detached view in Fig.

6, having a concentric circular recess D the diameter of the post B andpreferably extending through the plate D. Upon the inner and upper sideof the plate D are the two lips D D and inclosed between the lips is aconcentric circular opening D the diameter of the shank B and two radialside openings D D to allow the pins B to pass through, and upon theupper side of the lips D are the notches D D to receive the pins B Thespace between the blade-spring C and the upper side of the plateD isequal to the thickest portion of the lips D so the central section ofthe blade-spring will rest against the lips I) and close the openingbetween them to the admission of dirt into the chamber between the plateD and stone 0'. The lips D are reduced in thickness at each end, so asto form the oppositely-inclined surfaces D upon each side of the notchesD In putting in the button the shank B of the post B is insertedin thecenter hole I), which serves as a countersink to receive the end of thepost B and hold it from lateral movement while it is being rotated inorder to bring the pins B B into alignment with the radial openings D DThe post and crown are turned upon each other until the pins B find theopenings D allowing the shank B to enter the center opening D betweenthe lips D with the body of the post B in the center hole D and with theend of the post resting against the bladespring The rotation of the postor crown a quarter-revolution in either direction will cause the pins Bto slide up the inclined surfaces D drawing the post into the crown andbending the blade-spring C until the pins B reach the notches D when thetension of the blade-spring C will iorce the post out of the crown,carrying the pins B into the notches D and thereby lock the two parts ofthe button securely together. In order to unlock the button, the post Bis pushed into the crown, bending the blade-spring C until the shoulderB strikes the lips D which limits the in ward motion of the post againstthe spring C This action of the post releases the pins B from thenotches D when the rotation of a quarter-revolution will carry the pinsback to the openings D releasing the crown from the post.

By the above-described construction I seek to secure several advantagesnot hitherto embodied in separable buttons of this class. By supportingthe blade spring upon the shoulder 0 projecting from the inner wall ofthe annular band C, I cause the entire strain exerted by the spring 0 tobe received by the band C, thereby relieving the central stone C frompressure, and by providing the post B with the shoulder B by which itsmotion is limited as it is being pushed into the crown I prevent theundue bending of the blade-spring, which would carry it against thestone 0'. The outer face of the crown-plate D is left free from allprojections, and the recess D enables the crown to be readily centeredupon the end of the post in putting the button together and held fromany lateral movement while the crown and post are being turned upon eachother for the purpose of bringing the pins projecting from the side ofthe post into alignment with the radial openings D D I am aware that ashoe and post provided with pins passing through openings in thecrown-plate and engaging notches upon-their!- ner side of thecrown-plate is not new; neither is it new to place a spring with thecrown acting against the post to carry the pins into their notches; noris it new to provide the inner side of the crown-plate with inclinedsurfaces in the manner I have herein described, and I do not hereinclaim these several features specifically as of my present invention.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a separable button,the combination of the shoe A, post 13,extending from said shoe, said post being provided with a shoulder B bywhich the entrance of the post into the crown of the button is limitedand having its end reduced in diameter, forming a shank B, pins B Bextending radially from said shank the width of said shoulder, so thedistance between the ends of said pins will equal the diameter of thepost B, plate D, forming a portion of the crown of the button andprovided with a central hole D and openings D D, extending radially fromsaid central hole and said plate having upon its outer face an annularcountersunk recess D, concentric with said central hole and having itsdiameter equal to the diameter of said post to receive the end of theshank B and radial pins B B and hold the post concentrically with thecentral hole D while the post and crown are being rotated upon eachother in order to bring the pins B B into alignment with the notches DD", and a spring held in the crown of the button and acting aga nst theend of said post to resist its entrance lnto the hole D substantially asdescribed.

2. In a separable button, the combination, with a crown comprising anannular band C, provided with an internal shoulder 0 and a plate D, heldin said band and provided with a central hole D to receive the post, ofashoe A, having a post B extending from said shoe with its free endentering said hole D and a blade-spring C with its ends resting upon theshoulder C and extending diametrically across the hole D, so as to actagainst the end of the post B as it is pushed into the crown, wherebythe strain exerted by said spring will be received upon the shoulder Csubstantially as described.

Dated the 10th day of December, 1891.

IVILLIAM A. TURNER.

Witnesses:

EDMUND CONVERSE, RUFUS B. FOWLER.

